Image: Ahja jõe ürgorg
Description: Ahja River. On the left side of the image on the riverbank there is outcrop of Devonian sandstone.
Title: Ahja jõe ürgorg
Credit: Own work
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: http://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes